1. Natural rubber is a polymer of –
(a) Butadiene
(b) Ethylene
(c) Isoprene
(d) Styrene
[Jharkhand P.C.S. (Pre) 2013, U.P.P.C.S. (Pre) 1992]
Ans. (c) Isoprene
- Polymerization is the combination of many little molecules to form one large molecule.
- The substances the polymer is made of are called monomers, and the result is called a polymer.
- Natural rubber is an example of a natural polymer, made from isoprene, which is a clear liquid made from petroleum.
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2. Natural rubber is a polymer of
(a) Isoprene
(b) Styrene
(c) Vinyl acetate
(d) Propene
(e) None of the above/More than one of the above
[66th B.P.S.C. (Pre) (Re. Exam) 2020, 65th B.P.S.C. (Pre) 2019]
Ans. (a) Isoprene
- Polymerization is the process of combining many small molecules into one big molecule.
- The smaller molecules are called monomers, and the product of the polymerization process is called a polymer.
- An example of a natural polymer is rubber, made from isoprene, a colorless liquid made from petroleum.
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3. Which of the following is not a Natural polymer?
(a) Wool
(b) Silk
(c) Leather
(d) Nylon
[U.P.P.C.S. (Mains) 2015, U.P.U.D.A./L.D.A. (Pre) 2001]
Ans. (d) Nylon
- Wool, silk, and leather are all materials that come from nature, but nylon is not natural.
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4. Which one of the following is a natural polymer?
(a) Bakelite
(b) Silk
(c) Kevlar
(d) Lexan
[U.P.P.C.S. (Pre) 2017]
Ans. (b) Silk
- Wool, silk, and leather are all made from materials found in nature, but nylon is not natural.
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5. Which of the following is not a natural polymer –
(a) Ghee
(b) Starch
(c) Protein
(d) Cotton
[U.P. Lower Sub. (Pre) 2009]
Ans. (a) Ghee
- Ghee is not made of the same material as the other natural substances.
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6. Cellulose and starch both are made up of :
(a) (+) – glucose
(b) (–) – fructose
(c) Both (a) and (b) given above
(d) (+) – galactose
[Uttarakhand P.C.S. (Pre) 2016]
Ans. (a) (+) – glucose
- Cellulose is the most common organic compound, biopolymer, and polysaccharide on Earth.
- Each molecule is made up of hundreds to thousands of glucose molecules.
- Starch plants have polysaccharides which are made of two types of glucose molecules – 10-30% amylase and 70-90% amylopectin.
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7. The most abundantly found organic compound in nature is –
(a) Glucose
(b) Fructose
(c) Sucrose
(d) Cellulose
[U.P.P.C.S. (Mains) 2014, U.P.P.C.S. (Mains) 2012]
Ans. (d) Cellulose
- Cellulose is a type of carbohydrate made up of a long chain of many D-glucose units connected together.
- It is the main component of cell walls in living creatures.
- It is mostly found in wood, making it the most common type of organic compound on the planet.
- Its purest form is cotton.
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8. Which of the following is an example of a non-cellulosic fiber?
(a) Rayon
(b) Linen
(c) Jute
(d) Nylon
[R.A.S./R.T.S. (Pre) 2018]
Ans. (d) Nylon
- Fabrics such as rayon, cotton, hemp, jute, and linen are created from cellulose, while materials like nylon and polyester do not come from cellulosic fiber
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9. Which of the following polymers is NOT a thermoplastic?
(a) Teflon on
(b) Neoprene
(c) Polystyrene
(d) Polythene
[U.P. P.C.S. (Pre) 2020]
Ans. (b) Neoprene
- Neoprene is not a thermoplastic, like the other options.
- It is a type of rubber made from chloroprene and is used to make things like pipes and belts.
- Neoprene is also known as polychloroprene or pc-rubber.
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10. Which one of the following polymers is not biodegradable?
(a) Cellulose
(b) Starch
(c) Protein
(d) PVC
[U.P. R.O./A.R.O. (Pre) 2017]
Ans. (d) PVC
- PVC is a type of plastic made from vinyl chloride, which does not break down in nature.
- On the other hand, natural polymers such as cellulose, starch, and protein do break down over time.
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11. Which one of the following is used in the synthesis of polythene?
(a) Methane
(b) Ethane
(c) Propane
(d) Butane
[R.A.S./R.T.S.(Pre) 2008]
Ans. (*)
- Polythene is made by combining ethylene molecules together.
- Therefore, it is a type of material made from ethylene.
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12. Which gas is obtained from plastic?
(a) Polynitrogen
(b) Polyhydrogen
(c) Polychlorine
(d) Polyethylene
[Uttarakhand P.C.S. (Pre) 2010]
Ans. (d) Polyethylene
- Gas made from plastic is called polyethylene.
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13. Which one of the following polymer is used in making bullet-proof vests?
(a) Bakelite
(b) Polyamides
(c) Teflon on
(d) Polyurethanes
[U.P.P.C.S. (Mains) 2014]
Ans. (b) Polyamides
- Kevlar is a strong, synthetic fiber often used to make bulletproof vests.
- It is made of para-aromatic polyamide (Poly-Paraphenylene Terephthalamide) and has a lot of strong connections between the chains.
- Bulletproof materials are also made with layers of laminated glass.
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14. Which of the following polymers is used in the manufacture of bulletproof material?
(a) Nylon
(b) Rayon
(c) Kevlar
(d) Dacron
[Jharkhand P.C.S. (Pre) 2010]
Ans. (c) Kevlar
- Kevlar is a type of strong synthetic fiber that is usually used to make bulletproof vests.
- It is made of para-aromatic polyamide and has lots of strong connections between the fibers.
- In addition to Kevlar, bulletproof materials are also made from layers of laminated glass.
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15. Which one of the following polymers is widely used for making bulletproof material?
(a) Polyvinyl chloride
(b) Polyamides
(c) Polyethylene
(d) Polycarbonates
[U.P. U.D.A./L.D.A. (Mains) 2010, U.P.P.S.C. (GIC) 2010, U.P.P.C.S. (Spl.) (Pre) 2005, I.A.S. (Pre) 1995]
Ans. (b) Polyamides
- Kevlar is a strong material often used to construct bulletproof vests.
- It is a type of synthetic fiber made up of para-aromatic polyamide molecules and contains many powerful bonds between its chains.
- Bulletproof materials are also made with layers of laminated glass.
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16. Which one of the following polymers is used for making bullet-proof windows?
(a) Polycarbonates
(b) Polyurethanes
(c) Polystyrene
(d) Polyamides
[U.P.P.C.S. (Pre) 2015]
Ans. (a) Polycarbonates
- Bullet-resistant glass is created by combining polycarbonate, thermoplastic, and several sheets of glass.
- It is then used to make bulletproof vests.
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17. Which one of the following is used in making ‘Bulletproof Jacket’?
(a) Fibrous glass
(b) Gunmetal
(c) Lead
(d) Laminated glass
[Uttarakhand P.C.S. (Pre) 2005]
Ans. (d) Laminated glass
- Bullet-resistant glass is created by combining polycarbonate, thermoplastic, and layers of glass.
- It can be used to make bulletproof vests.
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18. Which one of the following polymers is used for making bulletproof materials?
I. Kevlar
II. Glyptal
III. Lexan
Select the correct answer using the codes given below :
Code :
(a) I and II
(b) II and III
(c) I and III
(d) None of the above
[U.P.P.C.S. (Mains) 2017]
Ans. (c) I and III
- Kevlar and Lexan are used to make bulletproof things.
- Glyptal is a kind of polymer used to make paints and lacquers which are used to protect wood and metal.
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19. Consider the following statements :
1. Teflon and Dacron are polymers
2. Neoprene is a synthetic rubber
3. Polythene is a polyethylene polymer
4. Natural rubber is chloroprene
Which of the above statements is correct :
(a) 1, 2 and 3
(b) 1, 2 and 4
(c) 2, 3 and 4
(d) 1, 3, and 4.
[U.P.P.C.S. (Pre) 2003, U.P. U.D.A./L.D.A. (Pre) 2002]
Ans. (a) 1, 2 and 3
- Natural rubber comes from rubber trees and is made of a chemical called isoprene.
- Synthetic rubber is made in a lab and one example is neoprene.
- Teflon and Dacron are types of polymers, and polythene or polyethylene is made from ethylene.
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20. A polymer used for making nonstick surface coating for utensils is –
(a) Polyvinyl chloride
(b) Teflon
(c) Polystyrene
(d) Polypropylene
[U.P.P.C.S. (Spl.) (Mains) 2008]
Ans. (b) Teflon
- Polytetrafluoroethylene, which is commonly referred to as Teflon, is a solid fluorocarbon with a density of 2.2 g/cm3 and a melting point of 327o C.
- It is often used to make a non-stick coating for cookware
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21. Which one of the following polymers is used for the production of non-stick pans?
(a) Teflon
(b) Neoprene
(c) P.V.C.
(d) Gutta-Percha
[U.P.P.C.S. (Pre) 2015]
Ans (a) Teflon
- Polytetrafluoroethylene, usually referred to as Teflon, is a solid fluorocarbon with a density of 2.2 g/cm3 and a melting point of 327o C. It is mainly used to create a non-stick coating for cookware.
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22. Non-stick frying pans are coated with :
(a) Orlon
(b) Teflon
(c) Polystyrene
(d) Polypropylene
[Jharkhand P.C.S. (Pre) 2016]
Ans. (b) Teflon
- Polytetrafluoroethylene, more commonly known as Teflon, is a solid fluorocarbon.
- It is very dense, weighing 2.2 grams per cubic centimeter, and melts at 327 degrees Celsius.
- It is often used to make pans and other cooking utensils
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23. What is Teflon?
(a) Fluorocarbon
(b) Hydrocarbon
(c) Microbicides
(d) Insecticide
[Jharkhand P.C.S. (Pre) 2010]
Ans. (a) Fluorocarbon
- Polytetrafluoroethylene (PTFE), also known as Teflon, is a solid fluorocarbon with a density of 2.2 g/cm3 and a melting point of 327o C.
- It is often used to make a non-stick coating for cook
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24. Teflon is a polymer of which of the following monomers?
(a) Tetrafluoroethylene
(b) Vinyl chloride
(c) Chloroprene
(d) Acetylene dichloride
(e) None of the above/ More than one of the above
[60th to 62nd B.P.S.C. (Pre) 2016]
Ans. (a) Tetrafluoroethylene
- Teflon is a type of material made from a combination of tetrafluoroethylene molecules.
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25. Teflon is the common name of –
(a) Polytetrafluoroethylene
(b) Polyvinyl chloride
(c) Polyvinyl fluoride
(d) Dichlorodifluoro methane
[Uttarakhand P.C.S. (Pre) 2016]
Ans. (a) Polytetrafluoroethylene
- Teflon is a type of plastic made from tetrafluoroethylene.
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26. Which among the following is not a polymer?
(a) Nylon
(b) Teflon
(c) Caprolactam
(d) Polystyrene
[Uttarakhand P.C.S. (Pre) 2012]
Ans. (c) Caprolactam
- Polymers are made of many small same parts connected together.
- They are found naturally in things like wood, rubber, cotton, silk, proteins, enzymes, and cellulose.
- Scientists have also made many different kinds of synthetic polymers from petroleum, like polyurethane, teflon, polyethylene, polystyrene, and nylon. Caprolactam (CPL) is a special chemical used to make nylon.
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27. Which one of the following substances is NOT synthetic?
(a) Fibroin
(b) Lexan
(c) Neoprene
(d) Teflon
[U.P.P.C.S. (Pre) 2020]
Ans. (a) Fibroin
- Fibroin is a natural protein found in silk.
- It is created by certain bugs like Bombyxmori and other moth species.
- Silk is made up of two proteins, sericin and fibroin, and fibroin is not synthetic.
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28. Bisphenol A (BPA), a cause of concern is a structural/ key component in the manufacture of which of the following kinds of plastics?
(a) Low-density polyethylene
(b) Polycarbonate
(c) Polyethylene terephthalate
(d) Polyvinyl chloride
[I.A.S. (Pre) 2021]
Ans. (b) Polycarbonate
- Bisphenol A (BPA) is a chemical used to make a type of plastic called polycarbonate It is in many products such as windows, food packaging, eyewear, water bottles, and cans It has been used since the 1960s.
- Most people are exposed to BPA through their diet, but it can also be in air, dust, and water.
- The main source of BPA is food and drinks, and it can leach into food from the inside of cans or from products like food containers, water bottles, and baby bottles.
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29. What is Bisphenol A (BPA)?
(a) A medical test for detecting cancer
(b) A test for testing the use of drugs to improve performance by athletes
(c) A chemical used for the development of food packaging materials
(d) A special type of alloy steel
[I.A.S. (Pre) 2008]
Ans. (c) A chemical used for the development of food packaging materials
- Bisphenol A (BPA) is a chemical that is used to make many products, such as windows, food packaging, glasses, and water bottles.
- It has been used in food packaging since the 1960s.
- Most people are exposed to BPA through the food and drinks they consume.
- It can also be found in the air, dust, and water.
- BPA can leach into food from containers and can linings.
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30. Phenol is used in the manufacture of which one of the following?
(a) P.V.C.
(b) Nylon
(c) Polystyrene
(d) Bakelite
[U.P.P.C.S. (Mains) 2010]
Ans. (d) Bakelite
- Bakelite is a type of plastic made by combining phenol and formaldehyde.
- It was created in 1907 by Belgian-American chemist Leo Baekeland.
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31. The condensation of forms Bakelite:
(a) Urea and formaldehyde
(b) Phenol and formaldehyde
(c) Phenol and acetaldehyde
(d) Melamine and formaldehyde
(e) None of the above/ More than one of the above
[60th to 62nd B.P.S.C. (Pre) 2016]
Ans. (b) Phenol and formaldehyde
- Bakelite is a type of plastic created by mixing phenol and formaldehyde together.
- It was discovered by Leo Baekeland in 1907.
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